Hey, im only new to marine but have done a lot of reading, (I don't know that much.... just a little) canister filters are no good for a reef system, stick to Live rock and a skimmer. i have a nano 60L with about 15Kg of live rock, which iv had for about 9 months problem free. stock is 2 small-medium clowns, a blue/green chromis and a peppermint shrimp and a few corals, an elegance, 3 zoa rocks, xenia, shrooms and some disk corals and i do a weekly 10% water change. also make sure you use RO/DI water. i am currently setting up a 200L of my own an am planing on running sumpless, with a Tunzes DOC 9004 skimmer and some Sicce Voyager nano powerheads and will just do a weekly water change with RO / salt mix.
I recommend head down to Vebas, i know its far for you from Hillarys but the guys down there have good advice. good luck. and welcome to the salt side
Skimmers are hard to pick go larger on the capacity and go for LED for your lights, best things since sliced bread.